Matthews (upper body) is not at practice and will not be in the lineup Friday or Saturday, according to David Alter of The Hockey News.

EDGE Analysis

Matthews will miss his third and fourth straight games when Toronto plays in Detroit on Friday and host the Capitals on Saturday, respectively. Matthews missed nine games in November with the same injury. He has 11 goals and 23 points in 24 appearances this season. His next chance to return is Dec. 31 at home versus the Islanders.